Radio receiver scale



June 1937- u. QUINTAVALLE RADIO RECEIVER SCALE Filed Dec. 29, 1936 2.085217 e lmnlo cncllrvlin scam 1 f Umbertejouintevelle, Milan, Italy, desi ner to Tabbrica Italiana Magneti Marelli Soc. An., 7 MilanJtaly, a corporation of Italy a Ap lication December 29, 1936, sci-nine. 118,164

4 In Italy January 7, 1936 15 Claims. I (01. lie-+1244).

, The present invention is directed to a device" gized each to illuminate'the respective scale, in intended to individuate in radiorecelvers the-sevunison with the manipulation-ofa wave-selector eral. stations'whose signals'eome in. or are de-fl 'or witch not shown.

sired, the individuation being made on the hjisecond drum l.3'is loose by its spindle 30 in 5 round of diiferent sets of characters as their bearings 3,'said drum" being'actuatedby means 5 succession in terms of frequency or wave' length of a knobll,- a grooved pulley Iii, a cord I5 and and the alphabetical succession of'the names of a grooved pulley l4 fast withv drum l3. I w stations or of their locations. i 1 A cam member I! is locatedin' an The device of the presentvinvention removes fast with it, saidicamhavinga helical perative the objection existing inindicatorsin which the edgefand a slider 20 engagessaid cani dial havingascale in terms of-v a given character end roller 22 which abuts on the helical is mounted to move andis adapted to come into u said cam 8 un er the act on of a Sp 9; ,vi ew to the operatop over a, reduced portion of said slider 20 is mounted to movein a stationary I its extent, said objection consisting in the fact guide sleevelll fast on one of the shaft bearings that the operator at thetime' he wants to tune 3 d extending inside said drum I. v

intoa station not directlyv adjacent to that prei The oonfigllli'otion a d e s on 01 e'ed e viously tuned in, has no indication suggestin of the cam iii are such as it causes a full stroke him the osition into whi h h h id bring th n of the slider equal to the longitudinal extent tuning control meansnor the direction in which of the dl'llln hen an, angular displ ent 20 he should operate said tuning control to apis imparted o the drum tom-use a-deslred 2o preach the wanted station. one of i 1 8 28" to move through An embodiment of the present invention is ail-111 Stroko in register With Po ters l-ll 01 shown on the annexed drawingand- Slot e F1gure 1 is a djagrammafical plan ti The drum I3 is made of tra'nslucentmaterial vthereof; U I and carries the references of several stations or, 25

Figure; 1 a fragmentary m; view of t locations thereof in alphabetical succession; ac-- indicator appearing t t .eperator through cordingly a region as 13' of said drum B which 1; of th receiver panel; is confined-'between"'two, generatrices 'of said Figure 3 is a fragmentary transverse section drum colfresponds with each -31 location o (mime H of Figure 1 r and said region may be carried in view to the In the illustrated construction'the device inoperator h ough a'slot 22 of the panel Ill hav-- 1 cludes a drum I carried by a spindle-2 which is mg appropriate Pointers y the manipulation mounted in bearings 3; said drum l. is rotated by I of knob and associate D s. means of a grooved pulley 4 and a cord 5 which The 6nd of e lider extending within is driven by a grooved pulley 6 fast on the spinhas 3 995198 fast thereon a Casing 35 die of 'a tuning knob 1 controlling acondenser 8 113M118 p a lon 25 directed towards the or any other preferred tuning element. Wall of the drum adjacent to it a enclosing The drum has Scales as 23 showing t a lamp 26 fed by a suitable source and wires not ing positions which correspond with the several Shown- Y 3 e 40 stations to be tuned into, Iand a comparatively Each region l3 of the-drum ll as above d 40 restricted region thereormay come m view t fined includes a referencewhich'may consist of t v(mentor through l t 9 ,provided i th a line 21. Appropriate references are located on stationary panel lll'loca'ted in front of said drum; the surface of the drum "i e e ion W. said slot has pointers H to enable the operator The precise location of-ea'ch reference 21 'is conto fl' t a correct adjustment 1 trolled by the longitudinal displacement of slider 45 In the illustrated embodiment the drum i has 20 which is actuated by the camilll solid with the three scales 28, 28', 28" arranged side by'side drum" The -5 8 24 and its P a on 5 and made in terms of frequency or wavelength take a Well defined Position tud n y al respectively in connection with three ranges drum in p t of each u a P s t on of" (short waves, long waves and medium waves); drum 1 o its flxisr In other 88011 50 said drum i is made of translucent material and tuning Po ition of the drum l corresp to cooperating electric lamps I2 are located within it particular position of the casing 24 a d the pe i e in register with said scales, said lamps being foration. 25 with respect to the ii, ,The supported by a plate 29 extending from one of proper tuning position for the drum l is shown bearings 3 and adapted to be selectively enerin terms of frequency or wave length ,bythe 55 scales thereon, which register with points Ii. Accordingly, eachreference 21 on the regions ll ofthedrum ilismarkedatthepointwithin the region it where a spot of light is formed by the light pencil emanating from the opening 2' of casing 24, when the set is tuned bythe operation of parts 1,], I, Ii; said casing 24 has been correspondingly located by" the operation of 981185", 22, and II; and the desired, regionil'. of the drum it has been in registerwith points 2:.

' Should two or more stations operative ;on different frequencies exist in a given location, the

respective region of drum i3 is providediwith I two or more references 21 such references being differentially located along saidiregionlasshown in respect ofregion ll". When the knob I is manipulated, theseveral marks of, a scale of the. drum I come sequen tially by order of frequencyin register: with pointers H, II and the casing flwithperforation 25 takes a predetermined rand distinct; position along the axis of drum, in respect of each of the tuning "positions imparted-to tune ing element I andthe drum I connected there-:-

reference line I] in said region of drum'il. As

above stated; the several stations which may exist and operate on differentrfrequencies in a given location or rwion, may be; discriminated .a and tuned into by means of respective references can or an equivalent member may be substituted 7 therewith, actuati g means for producing a re-' I'l appearing at the side of each. other-in'said drum region I!" along the direction of the axis,

of drum it.

,Reversely whenthe tuning element It and cooperating drumi withcam ill, slider-1| andv casing, are in positionifor receiving anincoming signal, the respective sending station may be identified by name or location by rotating the drum it; by means of knob i1 until one of the; reference linesi'l of the drum ll registers with the'light spot produced .on the drum II by the parts", 25, 24, the regionil or-il'iof drum ii in which such reference line is located showing then the name or location of said station in register with the pointers 23.; f a

Said reference lines 21 may be provided in different colours in accordance with several wave length rangesto evidence their cooperation with the respective several scales of. the drum I having similar-colours and with the position imparted to the ,wave or switch, Of course.

the described arrangement is adapted for different embodiments, Lvinswithin appended claims; say ribbons adapted to wind and unwind on and from bobbins, or movable plates, or also circular and rotatable dials maybe' used'instead of either or both drums land it, and a spiral for helical .cam. i8.s

What I claim as my invention and desire to i its selective setting with respect to thetraverse of secured by United States Letters Patent is:-

1. An indicator of tuned-in transmitting staand means on said first scale for-shifting mid tion in a radioreceiver comprising a scale 'made in terms of a given spective motion 0 said pointer and scale said respective motion of said fiirst named-scale and respective motion of and Y actuating meansbe'mg' connected with-a element of said I motion of said second pointsr'under connected with a tuning element of midi-adiodatum, a pointer cooperating with said second scale,said second scale andseo- I ond pointerbeingrespectively; adjustable in respect of said second for shifting said second pointer unison with said element of said radioreceiver. a second dependent of said first scal'eand made in terms of 1 a second datum,

with said second scale to traverse it. ably upmrtinssaia its-sues tive setting: with respectto the traverse-of second pointer in .termstofsaid-seoond and means forshifting-mid seeondpcinta' in? unison withsaid respective motion of actuating means v with, a

respectivemotionof said-first scale and pointer? and'means supporting ssidsecond selective setting with said secondpointer in a direction I to ofsaidshiftinsmeansthereior. a' 4. An indicator of tunedin station in a .radioreceiver a scalemade in terms of agivendatmn meansmovabiylupaporting'said scale. means foractuating said scale said movable scale and said movable scale and,-actuatmg:means .being 1 connected with a tuningeiement of saidradio-a receiver, a pointer cooperating with said scale, a second scale independent of said first scale and 1 made'in terms of another datum,a second pointer cooperating with said second scale to traverse it. means movabiy supportins, said second scale for said second pointer in terms of said second datum.

second pointer in unison with said firstsc'aier- I 6. An indicator of tuned intransmitting station in a radioreceiver comprising a scale made a V 2,084,217 in terms of frequency, means movablysupporting said scale, means for actuating said scale -said movablescale and actuating means being connected with a tuning', element of said radiore ceiver, a pointer cooperating with said scale, a second scale independent of said first scale and made in terms of a datum other than frequency, a second pointer cooperating with said second scale to traverse it, means movably supporting said second scale for its selective setting with re.- spect to the traverse of said second pointer in terms of said second datum, and means for shifting said second pointerin unison with said first scale.

7. An indicator of tuned in transmitting station in a radioreceiver comprising a scale made in terms of a datum other than the names of station locations, means movably supporting said scale, means for actuating said scale said movable names of station locations, a second pointer cooperating with said second scale to traverse it, means movably supporting said second scale for its selective setting with respect tothe traverse of said second pointer in terms of said second datum, and

means for shifting said second pointer in unison with said first scale.

8. An indicator of tuned in transmitting station in a radioreceiver comprising a scale made in terms of a given datum, means movably supporting said scale, means for actuating said scale said movable scale and actuating means being connected with a tuning element of said radioreceiver, a pointer cooperating with said scale, a second scale independent of said first scale and having references located thereon in terms of another datum, a second pointer cooperating with said references of said second scale, means movably supporting said second scalefor its selective setting with respect to the traverse of said second pointer, and means for shifting said second pointer in unison with said first scale.

9. An indicator of tuned in transmitting stationin a radioreceiver comprising a scale made in terms of a given datum, means movably supporting said scale, means for actuating said,scale said movable scale and actuating means being connected with a tuning element of said radioreceiver, a pointer cooperating with said scale, a second scale independent of said first scale and having differentiated references located thereon in terms of another datum, a second pointer cooperating with said differentiated references of said second scale, means movably supporting said seo- 3 connected with a tuning element of said radio receiver, a pointer cooperating with said scale, a second scale independent of said first scale and having references arranged thereon in terms of another datum said references including a number of differentiated references in respect of each of selected ones of data of saidsecond scale, a

ond scale forv its selective setting with respect to the traverse of said second pointer interm's of saidsecond datum and means for shifting said second pointer in unison with said first;scaie.;.

' 11, An indicator of tuned intransmitting m tion in a radio receiver, comprising a scale made in terms of frequency, means movably being connected with a tuning element of said radioreceiver, a pointer cooperating with said scale to traverse it, a second scale independent of saidfirst scale and having references thereon which are differentiated in respect of frequency ranges and located thereon ,in terms of another datum, a second pointer cooperating supporting said scale, means'foractuating said scale said movable scale and actuating means with said differentiated references of said second scale, means movably supporting said second scale for its selective setting with respect to the traverse of said second pointer, and means for shifting said second pointer in unison with said first scale. i

12. An indicator of tuned in transmitting station in a radioreceiver comprising a drum having thereon a scale in terms of a given datum, means rotatably supporting said drum, means for actuating said drum and connected with a tuning element of said radioreceiver, a pointer cooperating with said drum scale, a second scale independent of said drum and made in terms of another datum, a second pointer cooperating with said second scale to traverse it, means movably supporting said second scale for its selective setting with respect to the traverse of said second pointer in terms of said second datum and means fast on said drum for shifting said second pointer in unison with said drum and scale thereof.

13. An indicator of tuned in transmitting station in a radioreceiver comprising a scale made in terms of a given datum, a pointer cooperating therewith, actuating means for producinga respective motion of said pointer and scale said actuating means being connected with a tuning element of said radioreceiver, a drum having references located thereon .in terms of another datum, means for rotatably supporting said drum, means for angularly setting said drum, a second pointer arranged to traverse said drum and to cooperate with said references thereof,

Y and means for shifting said second pointer in unison with said respective motion of said first named scale.

14. An indicator of tuned in transmitting station in a radioreceiver comprising a drum having thereon a scale in terms of frequency, means rotatablysupporting said drum, means for actuating said drum and connected with a tuning element of said radioreceiver, a pointer cooperating with said drum scale, a second drum ing thereon a scale in terms of frequency, means rotatably supporting said drum, means for achaving references at differentiated regions theretuntin: said drumendioonn ected wlth stunlnz; 111mm sold support. s leoondpolnter on said 7 element of said radiorecelver, a. pointer coop- ,osrrler arranged to trsvene Inside sold second crating" wltnssid drum sealers seoond'drmni wlth'eddreterencestheno l; having translucent references at dlflerentiated 5 regions thereof, means tor'rotatsbly mpportlns; ber tnddn sell! said second drunnm'esnl for an'mflarly said second drum, n support member'extendlnz pointer Non: 1 I within ssld nrst drum, a carrier mounted to "UMBER 'I'OQUMAVAI JJ; 

